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Refactor operation equivalence checking in BBVectorize by extending Instruction::isSameOperationAs.

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Maintaining this kind of checking in different places is dangerous, extending
Instruction::isSameOperationAs consolidates this logic into one place. Here
I've added an optional flags parameter and two flags that are important for
vectorization: CompareIgnoringAlignment and CompareUsingScalarTypes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159329 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel
2012-06-28 05:42:26 +00:00
parent 97a759249d
commit ec4e85e336
3 changed files with 29 additions and 29 deletions
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25
lib/Transforms/Vectorize/BBVectorize.cpp
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@ -660,30 +660,9 @@ namespace {
// Loads and stores can be merged if they have different alignments,
// but are otherwise the same.
LoadInst *LI, *LJ;
StoreInst *SI, *SJ;
if ((LI = dyn_cast<LoadInst>(I)) && (LJ = dyn_cast<LoadInst>(J))) {
if (I->getType() != J->getType())
return false;
if (LI->getPointerOperand()->getType() !=
LJ->getPointerOperand()->getType() ||
LI->isVolatile() != LJ->isVolatile() ||
LI->getOrdering() != LJ->getOrdering() ||
LI->getSynchScope() != LJ->getSynchScope())
return false;
} else if ((SI = dyn_cast<StoreInst>(I)) && (SJ = dyn_cast<StoreInst>(J))) {
if (SI->getValueOperand()->getType() !=
SJ->getValueOperand()->getType() ||
SI->getPointerOperand()->getType() !=
SJ->getPointerOperand()->getType() ||
SI->isVolatile() != SJ->isVolatile() ||
SI->getOrdering() != SJ->getOrdering() ||
SI->getSynchScope() != SJ->getSynchScope())
return false;
} else if (!J->isSameOperationAs(I)) {
if (!J->isSameOperationAs(I, Instruction::CompareIgnoringAlignment))
return false;
}
// FIXME: handle addsub-type operations!
if (IsSimpleLoadStore) {